cosd_frule

chainrules

Function cosd_frule 

Source 
pub fn cosd_frule<S: ScalarAd>(x: S, dx: S) -> (S, S)
Expand description

Forward rule for cosd.

ยงExamples

use chainrules::cosd_frule;

let (_, dy) = cosd_frule(60.0_f64, 1.0);
assert!((dy + std::f64::consts::PI / 180.0 * (60.0_f64.to_radians()).sin()).abs() < 1e-12);